Furnace on while driving

willald wrote:
..While we're on this topic:

Some relatives of ours recently bought a new 5th wheel, and the dealer they bought from informed them that one should NEVER travel with furnace on. Was not 'cause of same ol' tired debate about traveling with propane on, but was more something specific with gas furnaces. Something along the lines of, wind, air blowing around the righ when going down the road will cause the flame in the furnace to continually get blown out, and furnace will wear itself out prematurely if it keeps trying to re-light itself over and over.

Anyone ever heard this, or know if there's any merit to it? IMO its a bunch of bull. This approach would not be much of a problem if you have a towable RV (TT or 5er), but really ridiculous and unrealistic with a MH. I know we have on occasion drove with the furnace on in our Georgetown MH when necessary, and its worked fine.

There is a specific reason why this is false. If you look at every propane furnace in an RV, there is an inlet and an outlet. They are side by side. The reason for this is so that the inlet and the outlet see the same pressure. This means the fan will still put the same air flow over the flame, regardless of the air pressure or lack of air pressure surrounding the inlet and outlet. Yes, it is specifically designed to work while going down the road, or in any other environment.